For an s17 game there is almost no penalty for standing on A7 vs Ace. For the others there is a good discussion in Ian Andersen's book. You can check the conditional penalties per $100 flat bet for standing on A7 vs ? in Don Schlesinger's book. This will give you a idea of the relative cost of some playing errors, but for your own unique betting strategy, to figure out the actual cost you need to run a few simulations, first a benchmark simulation with perfect strategy, then create the cover strategy you want to use and run another simulation and compare it to the benchmark. This is best done with a program like SBA or CV Data.